Author: Marlowe D. Thorne Publisher: Forgotten Books ISBN: 9781528521703 Category : Technology & Engineering Languages : en Pages : 24
Book Description
Excerpt from Soil Moisture Evaluation Figure II shows the release curves for these same three soils, but plotted with moisture content expressed as percents available moisture (held at tensions between 15 atmospheres and atmosphere). If we look at the tensions corresponding to 50 percent available moisture for the three soils, we find that for the clay it is h.5 atmospheres; for the 10mm 2 atmospheres, and for the sand atmos pherae. This information is arranged in Table I for various available moisture percentages. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: E. J. Dortignac Publisher: Forgotten Books ISBN: 9780366724949 Category : Technology & Engineering Languages : en Pages : 292
Book Description
Excerpt from A Progress Report on the Development of Methods for Predicting Soil Moisture Content, Vol. 1 On the basis of recent research in the Department of Agriculture, particularly the Forest Service, certain basic concepts concerning soil moisture changes have developed.( 8 A thorough knowledge of these fundamental relations is necessary for an understanding of prediction methods described in this report as well as for proper evaluation of results and their applicability to other areas. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Cornelius H. M. van Bavel Publisher: Forgotten Books ISBN: 9780266921158 Category : Technology & Engineering Languages : en Pages : 38
Book Description
Excerpt from Measurement of Soil Moisture Content by the Neutron Method Half life Time required to reduce the quantity of a radio isotope to one half of the original amount. Input sensitivity Smallest signal which will be registered by a system. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Cornelius H. M. van Bavel Publisher: Forgotten Books ISBN: 9781390250008 Category : Technology & Engineering Languages : en Pages : 44
Book Description
Excerpt from Soil Moisture Measurement With the Neutron Method Millicurie A quantity unit of radioactive material equivalent to 3. 7 x 107 disintegrations per second. Milliroentgen A unit of ionizing radiative energy; one thousandth of a roentgen. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Southern Forest Experiment Station Publisher: Forgotten Books ISBN: 9780265827970 Category : Technology & Engineering Languages : en Pages : 58
Book Description
Excerpt from Soil-Moisture Measurement With the Fiberglas Instrument Each of these units Operates on the principle that resistance to the passage of an electrical current through the unit will depend on its moisture content. Buried in the soil, the porous material of the unit wets and dries along with the soil around it, and the changes in moisture content affect the electrical conductivity of the unit. Wires lead from the unit to the surface of the ground, where the resistance of the unit is read with a meter. To convert resistance readings to soil moisture values requires calibration of the units in the soil being studied. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Lyman J. Briggs Publisher: Forgotten Books ISBN: 9780266859659 Category : Languages : en Pages : 102
Book Description
Excerpt from The Mechanics of Soil Moisture It is intended in this bulletin to present the application of certain dynamical principles to the problems attending the movement and retention of soil moisture. Among these problems may be mentioned the capacity of a soil for water, the adjustment of water between a dry and a wet soil, the relation of texture, structure, and temperature to the water capacity, and the effect of fertilizers upon the water content of a soil. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Howard W. Lull Publisher: Forgotten Books ISBN: 9780364422281 Category : Technology & Engineering Languages : en Pages : 64
Book Description
Excerpt from Soil-Moisture Measurement As has been noted, the gravimetric method is the only commonly used direct means of measuring soil moisture. Simply, it involves taking a soil sample, weighing it, oven-drying it, reweighing, and expressing the original moisture content in percent of oven-dry weight of soil. The first step, securing the sample, is the most troublesome, the degree of difficulty depending on the condition of the soil. Sampling conditions are ideal when soil is just moist enough for easy ingress and egress of the sampling instrument, and where stones, roots, and organic matter are not a problem. Such conditions are seldom encountered. With free water in the soil, moisture can never be sampled accurately: water will drip off as the sample is removed from the ground or compaction may squeeze it out. Rapid sampling is essential to prevent undue losses. Stickiness, often a problem in wet soils, can be alleviated by keeping instruments clean. Where a wet layer overlies a dry one, samples taken from the drier levels may be contaminated. After the upper soil is wetted by a summer rain, for instance, removal of a sample may permit water to run down the hole toward drier soil. The same problem is en countered when samples are taken below a perched water table. Wet instruments add to contamination and should be dried between samplings. When the soil is dry and hard, the principal problem in fine textured soils is to get the sampling instrument in and out again. In coarse-textured soils particularly, samples may slide out of the in strument as it is withdrawn from the soil. Fortunately, after the soil dries in summer, its moisture content may fluctuate so little that frequent sampling may be unnecessary. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: R. F. Holt Publisher: Forgotten Books ISBN: 9780365656159 Category : Science Languages : en Pages : 50
Book Description
Excerpt from Soil Moisture Survey of Some Representative Minnesota Soils Minnesota lies in the subhumid climatic zone. This fact emphasizes the need of evaluating soil moisture characteristics of the major agricultural soils of the State. In most years there are areas in the State Where crops suffer from lack of moisture. Soils most likely to run short of water are those whose retentive capacity for moisture is low (especially sandy soils) However. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: D. B. Peters Publisher: Forgotten Books ISBN: 9780331048308 Category : Science Languages : en Pages : 50
Book Description
Excerpt from Soil Moisture Survey of Some Representative Illinois Soil Types Although the energy concept of soil moisture provides agricultural workers with an extremely useful means of understanding and evaluating agronomic and engineering practices, it is not feasible at the present time to measure the soil moisture characteristics for every soil type. The more practical solution is to make such measurements on representa tive soil types and to project the information obtained to closely Related soils. Distinguishing features, such as soil structure and textural class which are amenable to mapping in the field, can be used to place soil types into groups that are nearly alike. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: United States Department Of Agriculture Publisher: Forgotten Books ISBN: 9780266899747 Category : Technology & Engineering Languages : en Pages : 56
Book Description
Excerpt from Some Field, Laboratory, and Office Procedures for Soil-Moisture Measurement: July 1954 One of the important phases of the soil-moisture studies Of the Vicksburg Infiltration Project has been the determination of bulk density. Defined as the ratio of the weight Of oven-dry soil to the volume it occupied in the field, bulk density is expressed in grams per cubic centi meter. Its use is principally for converting moisture content from percent by weight to depth or area-inches. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Marlowe D. Thorne
Author: E. J. Dortignac
Author: Cornelius H. M. van Bavel
Author: Cornelius H. M. van Bavel
Author: Southern Forest Experiment Station
Author: Lyman J. Briggs
Author: Howard W. Lull
Author: R. F. Holt
Author: D. B. Peters
Author: United States Department Of Agriculture